/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {AxiosPromise} from 'axios';
import {Compute, JWT, OAuth2Client, UserRefreshClient} from 'google-auth-library';

import {BodyResponseCallback, createAPIRequest, GlobalOptions, GoogleConfigurable, MethodOptions} from '../../shared/src';

// tslint:disable: no-any
// tslint:disable: class-name
// tslint:disable: variable-name
// tslint:disable: jsdoc-format
// tslint:disable: no-namespace

export namespace cloudbilling_v1 {
  export interface Options extends GlobalOptions {
    version: 'v1';
  }

  /**
   * Cloud Billing API
   *
   * Allows developers to manage billing for their Google Cloud Platform
   * projects     programmatically.
   *
   * @example
   * const {google} = require('googleapis');
   * const cloudbilling = google.cloudbilling('v1');
   *
   * @namespace cloudbilling
   * @type {Function}
   * @version v1
   * @variation v1
   * @param {object=} options Options for Cloudbilling
   */
  export class Cloudbilling {
    _options: GlobalOptions;
    google?: GoogleConfigurable;
    root = this;

    billingAccounts: Resource$Billingaccounts;
    projects: Resource$Projects;
    services: Resource$Services;

    constructor(options: GlobalOptions, google?: GoogleConfigurable) {
      this._options = options || {};
      this.google = google;
      this.getRoot.bind(this);

      this.billingAccounts = new Resource$Billingaccounts(this);
      this.projects = new Resource$Projects(this);
      this.services = new Resource$Services(this);
    }

    getRoot() {
      return this.root;
    }
  }

  /**
   * Represents the aggregation level and interval for pricing of a single SKU.
   */
  export interface Schema$AggregationInfo {
    /**
     * The number of intervals to aggregate over. Example: If aggregation_level
     * is &quot;DAILY&quot; and aggregation_count is 14, aggregation will be
     * over 14 days.
     */
    aggregationCount?: number;
    aggregationInterval?: string;
    aggregationLevel?: string;
  }
  /**
   * Specifies the audit configuration for a service. The configuration
   * determines which permission types are logged, and what identities, if any,
   * are exempted from logging. An AuditConfig must have one or more
   * AuditLogConfigs.  If there are AuditConfigs for both `allServices` and a
   * specific service, the union of the two AuditConfigs is used for that
   * service: the log_types specified in each AuditConfig are enabled, and the
   * exempted_members in each AuditLogConfig are exempted.  Example Policy with
   * multiple AuditConfigs:      {       &quot;audit_configs&quot;: [         {
   * &quot;service&quot;: &quot;allServices&quot; &quot;audit_log_configs&quot;:
   * [             {               &quot;log_type&quot;: &quot;DATA_READ&quot;,
   * &quot;exempted_members&quot;: [ &quot;user:foo@gmail.com&quot; ] }, {
   * &quot;log_type&quot;: &quot;DATA_WRITE&quot;,             },             {
   * &quot;log_type&quot;: &quot;ADMIN_READ&quot;,             }           ] },
   * {           &quot;service&quot;: &quot;fooservice.googleapis.com&quot;
   * &quot;audit_log_configs&quot;: [             { &quot;log_type&quot;:
   * &quot;DATA_READ&quot;,             },             { &quot;log_type&quot;:
   * &quot;DATA_WRITE&quot;,               &quot;exempted_members&quot;: [
   * &quot;user:bar@gmail.com&quot;               ]             }           ] }
   * ]     }  For fooservice, this policy enables DATA_READ, DATA_WRITE and
   * ADMIN_READ logging. It also exempts foo@gmail.com from DATA_READ logging,
   * and bar@gmail.com from DATA_WRITE logging.
   */
  export interface Schema$AuditConfig {
    /**
     * The configuration for logging of each type of permission.
     */
    auditLogConfigs?: Schema$AuditLogConfig[];
    /**
     * Specifies a service that will be enabled for audit logging. For example,
     * `storage.googleapis.com`, `cloudsql.googleapis.com`. `allServices` is a
     * special value that covers all services.
     */
    service?: string;
  }
  /**
   * Provides the configuration for logging a type of permissions. Example: {
   * &quot;audit_log_configs&quot;: [         {           &quot;log_type&quot;:
   * &quot;DATA_READ&quot;,           &quot;exempted_members&quot;: [
   * &quot;user:foo@gmail.com&quot;           ]         },         {
   * &quot;log_type&quot;: &quot;DATA_WRITE&quot;,         }       ]     }  This
   * enables &#39;DATA_READ&#39; and &#39;DATA_WRITE&#39; logging, while
   * exempting foo@gmail.com from DATA_READ logging.
   */
  export interface Schema$AuditLogConfig {
    /**
     * Specifies the identities that do not cause logging for this type of
     * permission. Follows the same format of Binding.members.
     */
    exemptedMembers?: string[];
    /**
     * The log type that this config enables.
     */
    logType?: string;
  }
  /**
   * A billing account in [GCP Console](https://console.cloud.google.com/). You
   * can assign a billing account to one or more projects.
   */
  export interface Schema$BillingAccount {
    /**
     * The display name given to the billing account, such as `My Billing
     * Account`. This name is displayed in the GCP Console.
     */
    displayName?: string;
    /**
     * If this account is a
     * [subaccount](https://cloud.google.com/billing/docs/concepts), then this
     * will be the resource name of the master billing account that it is being
     * resold through. Otherwise this will be empty.  &gt; This field is
     * currently in &gt; [Beta](https://cloud.google.com/terms/launch-stages).
     */
    masterBillingAccount?: string;
    /**
     * The resource name of the billing account. The resource name has the form
     * `billingAccounts/{billing_account_id}`. For example,
     * `billingAccounts/012345-567890-ABCDEF` would be the resource name for
     * billing account `012345-567890-ABCDEF`.
     */
    name?: string;
    /**
     * True if the billing account is open, and will therefore be charged for
     * any usage on associated projects. False if the billing account is closed,
     * and therefore projects associated with it will be unable to use paid
     * services.
     */
    open?: boolean;
  }
  /**
   * Associates `members` with a `role`.
   */
  export interface Schema$Binding {
    /**
     * Specifies the identities requesting access for a Cloud Platform resource.
     * `members` can have the following values:  * `allUsers`: A special
     * identifier that represents anyone who is    on the internet; with or
     * without a Google account.  * `allAuthenticatedUsers`: A special
     * identifier that represents anyone    who is authenticated with a Google
     * account or a service account.  * `user:{emailid}`: An email address that
     * represents a specific Google    account. For example, `alice@gmail.com`
     * or `joe@example.com`.   * `serviceAccount:{emailid}`: An email address
     * that represents a service    account. For example,
     * `my-other-app@appspot.gserviceaccount.com`.  * `group:{emailid}`: An
     * email address that represents a Google group.    For example,
     * `admins@example.com`.   * `domain:{domain}`: A Google Apps domain name
     * that represents all the    users of that domain. For example,
     * `google.com` or `example.com`.
     */
    members?: string[];
    /**
     * Role that is assigned to `members`. For example, `roles/viewer`,
     * `roles/editor`, or `roles/owner`. Required
     */
    role?: string;
  }
  /**
   * Represents the category hierarchy of a SKU.
   */
  export interface Schema$Category {
    /**
     * The type of product the SKU refers to. Example: &quot;Compute&quot;,
     * &quot;Storage&quot;, &quot;Network&quot;, &quot;ApplicationServices&quot;
     * etc.
     */
    resourceFamily?: string;
    /**
     * A group classification for related SKUs. Example: &quot;RAM&quot;,
     * &quot;GPU&quot;, &quot;Prediction&quot;, &quot;Ops&quot;,
     * &quot;GoogleEgress&quot; etc.
     */
    resourceGroup?: string;
    /**
     * The display name of the service this SKU belongs to.
     */
    serviceDisplayName?: string;
    /**
     * Represents how the SKU is consumed. Example: &quot;OnDemand&quot;,
     * &quot;Preemptible&quot;, &quot;Commit1Mo&quot;, &quot;Commit1Yr&quot;
     * etc.
     */
    usageType?: string;
  }
  /**
   * Response message for `ListBillingAccounts`.
   */
  export interface Schema$ListBillingAccountsResponse {
    /**
     * A list of billing accounts.
     */
    billingAccounts?: Schema$BillingAccount[];
    /**
     * A token to retrieve the next page of results. To retrieve the next page,
     * call `ListBillingAccounts` again with the `page_token` field set to this
     * value. This field is empty if there are no more results to retrieve.
     */
    nextPageToken?: string;
  }
  /**
   * Request message for `ListProjectBillingInfoResponse`.
   */
  export interface Schema$ListProjectBillingInfoResponse {
    /**
     * A token to retrieve the next page of results. To retrieve the next page,
     * call `ListProjectBillingInfo` again with the `page_token` field set to
     * this value. This field is empty if there are no more results to retrieve.
     */
    nextPageToken?: string;
    /**
     * A list of `ProjectBillingInfo` resources representing the projects
     * associated with the billing account.
     */
    projectBillingInfo?: Schema$ProjectBillingInfo[];
  }
  /**
   * Response message for `ListServices`.
   */
  export interface Schema$ListServicesResponse {
    /**
     * A token to retrieve the next page of results. To retrieve the next page,
     * call `ListServices` again with the `page_token` field set to this value.
     * This field is empty if there are no more results to retrieve.
     */
    nextPageToken?: string;
    /**
     * A list of services.
     */
    services?: Schema$Service[];
  }
  /**
   * Response message for `ListSkus`.
   */
  export interface Schema$ListSkusResponse {
    /**
     * A token to retrieve the next page of results. To retrieve the next page,
     * call `ListSkus` again with the `page_token` field set to this value. This
     * field is empty if there are no more results to retrieve.
     */
    nextPageToken?: string;
    /**
     * The list of public SKUs of the given service.
     */
    skus?: Schema$Sku[];
  }
  /**
   * Represents an amount of money with its currency type.
   */
  export interface Schema$Money {
    /**
     * The 3-letter currency code defined in ISO 4217.
     */
    currencyCode?: string;
    /**
     * Number of nano (10^-9) units of the amount. The value must be between
     * -999,999,999 and +999,999,999 inclusive. If `units` is positive, `nanos`
     * must be positive or zero. If `units` is zero, `nanos` can be positive,
     * zero, or negative. If `units` is negative, `nanos` must be negative or
     * zero. For example $-1.75 is represented as `units`=-1 and
     * `nanos`=-750,000,000.
     */
    nanos?: number;
    /**
     * The whole units of the amount. For example if `currencyCode` is
     * `&quot;USD&quot;`, then 1 unit is one US dollar.
     */
    units?: string;
  }
  /**
   * Defines an Identity and Access Management (IAM) policy. It is used to
   * specify access control policies for Cloud Platform resources.   A `Policy`
   * consists of a list of `bindings`. A `Binding` binds a list of `members` to
   * a `role`, where the members can be user accounts, Google groups, Google
   * domains, and service accounts. A `role` is a named list of permissions
   * defined by IAM.  **Example**      {       &quot;bindings&quot;: [         {
   * &quot;role&quot;: &quot;roles/owner&quot;,           &quot;members&quot;: [
   * &quot;user:mike@example.com&quot;, &quot;group:admins@example.com&quot;,
   * &quot;domain:google.com&quot;,
   * &quot;serviceAccount:my-other-app@appspot.gserviceaccount.com&quot;, ] },
   * {           &quot;role&quot;: &quot;roles/viewer&quot;,
   * &quot;members&quot;: [&quot;user:sean@example.com&quot;]         }       ]
   * }  For a description of IAM and its features, see the [IAM developer&#39;s
   * guide](https://cloud.google.com/iam/docs).
   */
  export interface Schema$Policy {
    /**
     * Specifies cloud audit logging configuration for this policy.
     */
    auditConfigs?: Schema$AuditConfig[];
    /**
     * Associates a list of `members` to a `role`. `bindings` with no members
     * will result in an error.
     */
    bindings?: Schema$Binding[];
    /**
     * `etag` is used for optimistic concurrency control as a way to help
     * prevent simultaneous updates of a policy from overwriting each other. It
     * is strongly suggested that systems make use of the `etag` in the
     * read-modify-write cycle to perform policy updates in order to avoid race
     * conditions: An `etag` is returned in the response to `getIamPolicy`, and
     * systems are expected to put that etag in the request to `setIamPolicy` to
     * ensure that their change will be applied to the same version of the
     * policy.  If no `etag` is provided in the call to `setIamPolicy`, then the
     * existing policy is overwritten blindly.
     */
    etag?: string;
    /**
     * Deprecated.
     */
    version?: number;
  }
  /**
   * Expresses a mathematical pricing formula. For Example:-  `usage_unit: GBy`
   * `tiered_rates:`    `[start_usage_amount: 20, unit_price: $10]`
   * `[start_usage_amount: 100, unit_price: $5]`  The above expresses a pricing
   * formula where the first 20GB is free, the next 80GB is priced at $10 per GB
   * followed by $5 per GB for additional usage.
   */
  export interface Schema$PricingExpression {
    /**
     * The base unit for the SKU which is the unit used in usage exports.
     * Example: &quot;By&quot;
     */
    baseUnit?: string;
    /**
     * Conversion factor for converting from price per usage_unit to price per
     * base_unit, and start_usage_amount to start_usage_amount in base_unit.
     * unit_price / base_unit_conversion_factor = price per base_unit.
     * start_usage_amount * base_unit_conversion_factor = start_usage_amount in
     * base_unit.
     */
    baseUnitConversionFactor?: number;
    /**
     * The base unit in human readable form. Example: &quot;byte&quot;.
     */
    baseUnitDescription?: string;
    /**
     * The recommended quantity of units for displaying pricing info. When
     * displaying pricing info it is recommended to display: (unit_price *
     * display_quantity) per display_quantity usage_unit. This field does not
     * affect the pricing formula and is for display purposes only. Example: If
     * the unit_price is &quot;0.0001 USD&quot;, the usage_unit is
     * &quot;GB&quot; and the display_quantity is &quot;1000&quot; then the
     * recommended way of displaying the pricing info is &quot;0.10 USD per 1000
     * GB&quot;
     */
    displayQuantity?: number;
    /**
     * The list of tiered rates for this pricing. The total cost is computed by
     * applying each of the tiered rates on usage. This repeated list is sorted
     * by ascending order of start_usage_amount.
     */
    tieredRates?: Schema$TierRate[];
    /**
     * The short hand for unit of usage this pricing is specified in. Example:
     * usage_unit of &quot;GiBy&quot; means that usage is specified in
     * &quot;Gibi Byte&quot;.
     */
    usageUnit?: string;
    /**
     * The unit of usage in human readable form. Example: &quot;gibi byte&quot;.
     */
    usageUnitDescription?: string;
  }
  /**
   * Represents the pricing information for a SKU at a single point of time.
   */
  export interface Schema$PricingInfo {
    /**
     * Aggregation Info. This can be left unspecified if the pricing expression
     * doesn&#39;t require aggregation.
     */
    aggregationInfo?: Schema$AggregationInfo;
    /**
     * Conversion rate used for currency conversion, from USD to the currency
     * specified in the request. This includes any surcharge collected for
     * billing in non USD currency. If a currency is not specified in the
     * request this defaults to 1.0. Example: USD * currency_conversion_rate =
     * JPY
     */
    currencyConversionRate?: number;
    /**
     * The timestamp from which this pricing was effective within the requested
     * time range. This is guaranteed to be greater than or equal to the
     * start_time field in the request and less than the end_time field in the
     * request. If a time range was not specified in the request this field will
     * be equivalent to a time within the last 12 hours, indicating the latest
     * pricing info.
     */
    effectiveTime?: string;
    /**
     * Expresses the pricing formula. See `PricingExpression` for an example.
     */
    pricingExpression?: Schema$PricingExpression;
    /**
     * An optional human readable summary of the pricing information, has a
     * maximum length of 256 characters.
     */
    summary?: string;
  }
  /**
   * Encapsulation of billing information for a GCP Console project. A project
   * has at most one associated billing account at a time (but a billing account
   * can be assigned to multiple projects).
   */
  export interface Schema$ProjectBillingInfo {
    /**
     * The resource name of the billing account associated with the project, if
     * any. For example, `billingAccounts/012345-567890-ABCDEF`.
     */
    billingAccountName?: string;
    /**
     * True if the project is associated with an open billing account, to which
     * usage on the project is charged. False if the project is associated with
     * a closed billing account, or no billing account at all, and therefore
     * cannot use paid services. This field is read-only.
     */
    billingEnabled?: boolean;
    /**
     * The resource name for the `ProjectBillingInfo`; has the form
     * `projects/{project_id}/billingInfo`. For example, the resource name for
     * the billing information for project `tokyo-rain-123` would be
     * `projects/tokyo-rain-123/billingInfo`. This field is read-only.
     */
    name?: string;
    /**
     * The ID of the project that this `ProjectBillingInfo` represents, such as
     * `tokyo-rain-123`. This is a convenience field so that you don&#39;t need
     * to parse the `name` field to obtain a project ID. This field is
     * read-only.
     */
    projectId?: string;
  }
  /**
   * Encapsulates a single service in Google Cloud Platform.
   */
  export interface Schema$Service {
    /**
     * A human readable display name for this service.
     */
    displayName?: string;
    /**
     * The resource name for the service. Example:
     * &quot;services/DA34-426B-A397&quot;
     */
    name?: string;
    /**
     * The identifier for the service. Example: &quot;DA34-426B-A397&quot;
     */
    serviceId?: string;
  }
  /**
   * Request message for `SetIamPolicy` method.
   */
  export interface Schema$SetIamPolicyRequest {
    /**
     * REQUIRED: The complete policy to be applied to the `resource`. The size
     * of the policy is limited to a few 10s of KB. An empty policy is a valid
     * policy but certain Cloud Platform services (such as Projects) might
     * reject them.
     */
    policy?: Schema$Policy;
    /**
     * OPTIONAL: A FieldMask specifying which fields of the policy to modify.
     * Only the fields in the mask will be modified. If no mask is provided, the
     * following default mask is used: paths: &quot;bindings, etag&quot; This
     * field is only used by Cloud IAM.
     */
    updateMask?: string;
  }
  /**
   * Encapsulates a single SKU in Google Cloud Platform
   */
  export interface Schema$Sku {
    /**
     * The category hierarchy of this SKU, purely for organizational purpose.
     */
    category?: Schema$Category;
    /**
     * A human readable description of the SKU, has a maximum length of 256
     * characters.
     */
    description?: string;
    /**
     * The resource name for the SKU. Example:
     * &quot;services/DA34-426B-A397/skus/AA95-CD31-42FE&quot;
     */
    name?: string;
    /**
     * A timeline of pricing info for this SKU in chronological order.
     */
    pricingInfo?: Schema$PricingInfo[];
    /**
     * Identifies the service provider. This is &#39;Google&#39; for first party
     * services in Google Cloud Platform.
     */
    serviceProviderName?: string;
    /**
     * List of service regions this SKU is offered at. Example:
     * &quot;asia-east1&quot; Service regions can be found at
     * https://cloud.google.com/about/locations/
     */
    serviceRegions?: string[];
    /**
     * The identifier for the SKU. Example: &quot;AA95-CD31-42FE&quot;
     */
    skuId?: string;
  }
  /**
   * Request message for `TestIamPermissions` method.
   */
  export interface Schema$TestIamPermissionsRequest {
    /**
     * The set of permissions to check for the `resource`. Permissions with
     * wildcards (such as &#39;*&#39; or &#39;storage.*&#39;) are not allowed.
     * For more information see [IAM
     * Overview](https://cloud.google.com/iam/docs/overview#permissions).
     */
    permissions?: string[];
  }
  /**
   * Response message for `TestIamPermissions` method.
   */
  export interface Schema$TestIamPermissionsResponse {
    /**
     * A subset of `TestPermissionsRequest.permissions` that the caller is
     * allowed.
     */
    permissions?: string[];
  }
  /**
   * The price rate indicating starting usage and its corresponding price.
   */
  export interface Schema$TierRate {
    /**
     * Usage is priced at this rate only after this amount. Example:
     * start_usage_amount of 10 indicates that the usage will be priced at the
     * unit_price after the first 10 usage_units.
     */
    startUsageAmount?: number;
    /**
     * The price per unit of usage. Example: unit_price of amount $10 indicates
     * that each unit will cost $10.
     */
    unitPrice?: Schema$Money;
  }


  export class Resource$Billingaccounts {
    root: Cloudbilling;
    projects: Resource$Billingaccounts$Projects;
    constructor(root: Cloudbilling) {
      this.root = root;
      this.getRoot.bind(this);
      this.projects = new Resource$Billingaccounts$Projects(root);
    }

    getRoot() {
      return this.root;
    }


    /**
     * cloudbilling.billingAccounts.create
     * @desc Creates a billing account. This method can only be used to create
     * [billing subaccounts](https://cloud.google.com/billing/docs/concepts) for
     * GCP resellers. When creating a subaccount, the current authenticated user
     * must have the `billing.accounts.update` IAM permission on the master
     * account, which is typically given to billing account
     * [administrators](https://cloud.google.com/billing/docs/how-to/billing-access).
     * > This method is currently in >
     * [Beta](https://cloud.google.com/terms/launch-stages).
     * @alias cloudbilling.billingAccounts.create
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {().BillingAccount} params.resource Request body data
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    create(
        params?: Params$Resource$Billingaccounts$Create,
        options?: MethodOptions): AxiosPromise<Schema$BillingAccount>;
    create(
        params: Params$Resource$Billingaccounts$Create,
        options: MethodOptions|BodyResponseCallback<Schema$BillingAccount>,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    create(
        params: Params$Resource$Billingaccounts$Create,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    create(callback: BodyResponseCallback<Schema$BillingAccount>): void;
    create(
        paramsOrCallback?: Params$Resource$Billingaccounts$Create|
        BodyResponseCallback<Schema$BillingAccount>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$BillingAccount>,
        callback?: BodyResponseCallback<Schema$BillingAccount>):
        void|AxiosPromise<Schema$BillingAccount> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Billingaccounts$Create;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Create;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/billingAccounts')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'POST'
            },
            options),
        params,
        requiredParams: [],
        pathParams: [],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$BillingAccount>(parameters, callback);
      } else {
        return createAPIRequest<Schema$BillingAccount>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.get
     * @desc Gets information about a billing account. The current authenticated
     * user must be a [viewer of the billing
     * account](https://cloud.google.com/billing/docs/how-to/billing-access).
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     // The resource name of the billing account to retrieve. For example,
     *     // `billingAccounts/012345-567890-ABCDEF`.
     *     name: 'billingAccounts/my-billing-account',  // TODO: Update
     * placeholder value.
     *
     *     auth: authClient,
     *   };
     *
     *   cloudbilling.billingAccounts.get(request, function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     // TODO: Change code below to process the `response` object:
     *     console.log(JSON.stringify(response, null, 2));
     *   });
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.billingAccounts.get
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.name The resource name of the billing account to retrieve. For example, `billingAccounts/012345-567890-ABCDEF`.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    get(params?: Params$Resource$Billingaccounts$Get,
        options?: MethodOptions): AxiosPromise<Schema$BillingAccount>;
    get(params: Params$Resource$Billingaccounts$Get,
        options: MethodOptions|BodyResponseCallback<Schema$BillingAccount>,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    get(params: Params$Resource$Billingaccounts$Get,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    get(callback: BodyResponseCallback<Schema$BillingAccount>): void;
    get(paramsOrCallback?: Params$Resource$Billingaccounts$Get|
        BodyResponseCallback<Schema$BillingAccount>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$BillingAccount>,
        callback?: BodyResponseCallback<Schema$BillingAccount>):
        void|AxiosPromise<Schema$BillingAccount> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Billingaccounts$Get;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Get;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+name}').replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: ['name'],
        pathParams: ['name'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$BillingAccount>(parameters, callback);
      } else {
        return createAPIRequest<Schema$BillingAccount>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.getIamPolicy
     * @desc Gets the access control policy for a billing account. The caller
     * must have the `billing.accounts.getIamPolicy` permission on the account,
     * which is often given to billing account
     * [viewers](https://cloud.google.com/billing/docs/how-to/billing-access).
     * > This method is currently in >
     * [Beta](https://cloud.google.com/terms/launch-stages).
     * @alias cloudbilling.billingAccounts.getIamPolicy
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.resource_ REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    getIamPolicy(
        params?: Params$Resource$Billingaccounts$Getiampolicy,
        options?: MethodOptions): AxiosPromise<Schema$Policy>;
    getIamPolicy(
        params: Params$Resource$Billingaccounts$Getiampolicy,
        options: MethodOptions|BodyResponseCallback<Schema$Policy>,
        callback: BodyResponseCallback<Schema$Policy>): void;
    getIamPolicy(
        params: Params$Resource$Billingaccounts$Getiampolicy,
        callback: BodyResponseCallback<Schema$Policy>): void;
    getIamPolicy(callback: BodyResponseCallback<Schema$Policy>): void;
    getIamPolicy(
        paramsOrCallback?: Params$Resource$Billingaccounts$Getiampolicy|
        BodyResponseCallback<Schema$Policy>,
        optionsOrCallback?: MethodOptions|BodyResponseCallback<Schema$Policy>,
        callback?: BodyResponseCallback<Schema$Policy>):
        void|AxiosPromise<Schema$Policy> {
      let params = (paramsOrCallback || {}) as
          Params$Resource$Billingaccounts$Getiampolicy;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Getiampolicy;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+resource}:getIamPolicy')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: ['resource'],
        pathParams: ['resource'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$Policy>(parameters, callback);
      } else {
        return createAPIRequest<Schema$Policy>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.list
     * @desc Lists the billing accounts that the current authenticated user has
     * permission to
     * [view](https://cloud.google.com/billing/docs/how-to/billing-access).
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     auth: authClient,
     *   };
     *
     *   var handlePage = function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     var billingAccountsPage = response['billingAccounts'];
     *     if (!billingAccountsPage) {
     *       return;
     *     }
     *     for (var i = 0; i < billingAccountsPage.length; i++) {
     *       // TODO: Change code below to process each resource in
     * `billingAccountsPage`: console.log(JSON.stringify(billingAccountsPage[i],
     * null, 2));
     *     }
     *
     *     if (response.nextPageToken) {
     *       request.pageToken = response.nextPageToken;
     *       cloudbilling.billingAccounts.list(request, handlePage);
     *     }
     *   };
     *
     *   cloudbilling.billingAccounts.list(request, handlePage);
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.billingAccounts.list
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string=} params.filter Options for how to filter the returned billing accounts. Currently this only supports filtering for [subaccounts](https://cloud.google.com/billing/docs/concepts) under a single provided reseller billing account. (e.g. "master_billing_account=billingAccounts/012345-678901-ABCDEF"). Boolean algebra and other fields are not currently supported.  > This field is currently in > [Beta](https://cloud.google.com/terms/launch-stages).
     * @param {integer=} params.pageSize Requested page size. The maximum page size is 100; this is also the default.
     * @param {string=} params.pageToken A token identifying a page of results to return. This should be a `next_page_token` value returned from a previous `ListBillingAccounts` call. If unspecified, the first page of results is returned.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    list(
        params?: Params$Resource$Billingaccounts$List, options?: MethodOptions):
        AxiosPromise<Schema$ListBillingAccountsResponse>;
    list(
        params: Params$Resource$Billingaccounts$List,
        options: MethodOptions|
        BodyResponseCallback<Schema$ListBillingAccountsResponse>,
        callback: BodyResponseCallback<Schema$ListBillingAccountsResponse>):
        void;
    list(
        params: Params$Resource$Billingaccounts$List,
        callback: BodyResponseCallback<Schema$ListBillingAccountsResponse>):
        void;
    list(callback: BodyResponseCallback<Schema$ListBillingAccountsResponse>):
        void;
    list(
        paramsOrCallback?: Params$Resource$Billingaccounts$List|
        BodyResponseCallback<Schema$ListBillingAccountsResponse>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ListBillingAccountsResponse>,
        callback?: BodyResponseCallback<Schema$ListBillingAccountsResponse>):
        void|AxiosPromise<Schema$ListBillingAccountsResponse> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Billingaccounts$List;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$List;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/billingAccounts')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: [],
        pathParams: [],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ListBillingAccountsResponse>(
            parameters, callback);
      } else {
        return createAPIRequest<Schema$ListBillingAccountsResponse>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.patch
     * @desc Updates a billing account's fields. Currently the only field that
     * can be edited is `display_name`. The current authenticated user must have
     * the `billing.accounts.update` IAM permission, which is typically given to
     * the
     * [administrator](https://cloud.google.com/billing/docs/how-to/billing-access)
     * of the billing account.  > This method is currently in >
     * [Beta](https://cloud.google.com/terms/launch-stages).
     * @alias cloudbilling.billingAccounts.patch
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.name The name of the billing account resource to be updated.
     * @param {string=} params.updateMask The update mask applied to the resource. Only "display_name" is currently supported.
     * @param {().BillingAccount} params.resource Request body data
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    patch(
        params?: Params$Resource$Billingaccounts$Patch,
        options?: MethodOptions): AxiosPromise<Schema$BillingAccount>;
    patch(
        params: Params$Resource$Billingaccounts$Patch,
        options: MethodOptions|BodyResponseCallback<Schema$BillingAccount>,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    patch(
        params: Params$Resource$Billingaccounts$Patch,
        callback: BodyResponseCallback<Schema$BillingAccount>): void;
    patch(callback: BodyResponseCallback<Schema$BillingAccount>): void;
    patch(
        paramsOrCallback?: Params$Resource$Billingaccounts$Patch|
        BodyResponseCallback<Schema$BillingAccount>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$BillingAccount>,
        callback?: BodyResponseCallback<Schema$BillingAccount>):
        void|AxiosPromise<Schema$BillingAccount> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Billingaccounts$Patch;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Patch;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+name}').replace(/([^:]\/)\/+/g, '$1'),
              method: 'PATCH'
            },
            options),
        params,
        requiredParams: ['name'],
        pathParams: ['name'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$BillingAccount>(parameters, callback);
      } else {
        return createAPIRequest<Schema$BillingAccount>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.setIamPolicy
     * @desc Sets the access control policy for a billing account. Replaces any
     * existing policy. The caller must have the `billing.accounts.setIamPolicy`
     * permission on the account, which is often given to billing account
     * [administrators](https://cloud.google.com/billing/docs/how-to/billing-access).
     * > This method is currently in >
     * [Beta](https://cloud.google.com/terms/launch-stages).
     * @alias cloudbilling.billingAccounts.setIamPolicy
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.resource_ REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.
     * @param {().SetIamPolicyRequest} params.resource Request body data
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    setIamPolicy(
        params?: Params$Resource$Billingaccounts$Setiampolicy,
        options?: MethodOptions): AxiosPromise<Schema$Policy>;
    setIamPolicy(
        params: Params$Resource$Billingaccounts$Setiampolicy,
        options: MethodOptions|BodyResponseCallback<Schema$Policy>,
        callback: BodyResponseCallback<Schema$Policy>): void;
    setIamPolicy(
        params: Params$Resource$Billingaccounts$Setiampolicy,
        callback: BodyResponseCallback<Schema$Policy>): void;
    setIamPolicy(callback: BodyResponseCallback<Schema$Policy>): void;
    setIamPolicy(
        paramsOrCallback?: Params$Resource$Billingaccounts$Setiampolicy|
        BodyResponseCallback<Schema$Policy>,
        optionsOrCallback?: MethodOptions|BodyResponseCallback<Schema$Policy>,
        callback?: BodyResponseCallback<Schema$Policy>):
        void|AxiosPromise<Schema$Policy> {
      let params = (paramsOrCallback || {}) as
          Params$Resource$Billingaccounts$Setiampolicy;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Setiampolicy;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+resource}:setIamPolicy')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'POST'
            },
            options),
        params,
        requiredParams: ['resource'],
        pathParams: ['resource'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$Policy>(parameters, callback);
      } else {
        return createAPIRequest<Schema$Policy>(parameters);
      }
    }


    /**
     * cloudbilling.billingAccounts.testIamPermissions
     * @desc Tests the access control policy for a billing account. This method
     * takes the resource and a set of permissions as input and returns the
     * subset of the input permissions that the caller is allowed for that
     * resource.  > This method is currently in >
     * [Beta](https://cloud.google.com/terms/launch-stages).
     * @alias cloudbilling.billingAccounts.testIamPermissions
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.resource_ REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field.
     * @param {().TestIamPermissionsRequest} params.resource Request body data
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    testIamPermissions(
        params?: Params$Resource$Billingaccounts$Testiampermissions,
        options?: MethodOptions):
        AxiosPromise<Schema$TestIamPermissionsResponse>;
    testIamPermissions(
        params: Params$Resource$Billingaccounts$Testiampermissions,
        options: MethodOptions|
        BodyResponseCallback<Schema$TestIamPermissionsResponse>,
        callback: BodyResponseCallback<Schema$TestIamPermissionsResponse>):
        void;
    testIamPermissions(
        params: Params$Resource$Billingaccounts$Testiampermissions,
        callback: BodyResponseCallback<Schema$TestIamPermissionsResponse>):
        void;
    testIamPermissions(
        callback: BodyResponseCallback<Schema$TestIamPermissionsResponse>):
        void;
    testIamPermissions(
        paramsOrCallback?: Params$Resource$Billingaccounts$Testiampermissions|
        BodyResponseCallback<Schema$TestIamPermissionsResponse>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$TestIamPermissionsResponse>,
        callback?: BodyResponseCallback<Schema$TestIamPermissionsResponse>):
        void|AxiosPromise<Schema$TestIamPermissionsResponse> {
      let params = (paramsOrCallback || {}) as
          Params$Resource$Billingaccounts$Testiampermissions;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Testiampermissions;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+resource}:testIamPermissions')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'POST'
            },
            options),
        params,
        requiredParams: ['resource'],
        pathParams: ['resource'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$TestIamPermissionsResponse>(
            parameters, callback);
      } else {
        return createAPIRequest<Schema$TestIamPermissionsResponse>(parameters);
      }
    }
  }

  export interface Params$Resource$Billingaccounts$Create {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;


    /**
     * Request body metadata
     */
    requestBody?: Schema$BillingAccount;
  }
  export interface Params$Resource$Billingaccounts$Get {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The resource name of the billing account to retrieve. For example,
     * `billingAccounts/012345-567890-ABCDEF`.
     */
    name?: string;
  }
  export interface Params$Resource$Billingaccounts$Getiampolicy {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * REQUIRED: The resource for which the policy is being requested. See the
     * operation documentation for the appropriate value for this field.
     */
    resource?: string;
  }
  export interface Params$Resource$Billingaccounts$List {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * Options for how to filter the returned billing accounts. Currently this
     * only supports filtering for
     * [subaccounts](https://cloud.google.com/billing/docs/concepts) under a
     * single provided reseller billing account. (e.g.
     * "master_billing_account=billingAccounts/012345-678901-ABCDEF"). Boolean
     * algebra and other fields are not currently supported.  > This field is
     * currently in > [Beta](https://cloud.google.com/terms/launch-stages).
     */
    filter?: string;
    /**
     * Requested page size. The maximum page size is 100; this is also the
     * default.
     */
    pageSize?: number;
    /**
     * A token identifying a page of results to return. This should be a
     * `next_page_token` value returned from a previous `ListBillingAccounts`
     * call. If unspecified, the first page of results is returned.
     */
    pageToken?: string;
  }
  export interface Params$Resource$Billingaccounts$Patch {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The name of the billing account resource to be updated.
     */
    name?: string;
    /**
     * The update mask applied to the resource. Only "display_name" is currently
     * supported.
     */
    updateMask?: string;

    /**
     * Request body metadata
     */
    requestBody?: Schema$BillingAccount;
  }
  export interface Params$Resource$Billingaccounts$Setiampolicy {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * REQUIRED: The resource for which the policy is being specified. See the
     * operation documentation for the appropriate value for this field.
     */
    resource?: string;

    /**
     * Request body metadata
     */
    requestBody?: Schema$SetIamPolicyRequest;
  }
  export interface Params$Resource$Billingaccounts$Testiampermissions {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * REQUIRED: The resource for which the policy detail is being requested.
     * See the operation documentation for the appropriate value for this field.
     */
    resource?: string;

    /**
     * Request body metadata
     */
    requestBody?: Schema$TestIamPermissionsRequest;
  }

  export class Resource$Billingaccounts$Projects {
    root: Cloudbilling;
    constructor(root: Cloudbilling) {
      this.root = root;
      this.getRoot.bind(this);
    }

    getRoot() {
      return this.root;
    }


    /**
     * cloudbilling.billingAccounts.projects.list
     * @desc Lists the projects associated with a billing account. The current
     * authenticated user must have the `billing.resourceAssociations.list` IAM
     * permission, which is often given to billing account
     * [viewers](https://cloud.google.com/billing/docs/how-to/billing-access).
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     // The resource name of the billing account associated with the
     * projects that
     *     // you want to list. For example,
     * `billingAccounts/012345-567890-ABCDEF`. name:
     * 'billingAccounts/my-billing-account',  // TODO: Update placeholder value.
     *
     *     auth: authClient,
     *   };
     *
     *   var handlePage = function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     var projectBillingInfoPage = response['projectBillingInfo'];
     *     if (!projectBillingInfoPage) {
     *       return;
     *     }
     *     for (var i = 0; i < projectBillingInfoPage.length; i++) {
     *       // TODO: Change code below to process each resource in
     * `projectBillingInfoPage`:
     *       console.log(JSON.stringify(projectBillingInfoPage[i], null, 2));
     *     }
     *
     *     if (response.nextPageToken) {
     *       request.pageToken = response.nextPageToken;
     *       cloudbilling.billingAccounts.projects.list(request, handlePage);
     *     }
     *   };
     *
     *   cloudbilling.billingAccounts.projects.list(request, handlePage);
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.billingAccounts.projects.list
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.name The resource name of the billing account associated with the projects that you want to list. For example, `billingAccounts/012345-567890-ABCDEF`.
     * @param {integer=} params.pageSize Requested page size. The maximum page size is 100; this is also the default.
     * @param {string=} params.pageToken A token identifying a page of results to be returned. This should be a `next_page_token` value returned from a previous `ListProjectBillingInfo` call. If unspecified, the first page of results is returned.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    list(
        params?: Params$Resource$Billingaccounts$Projects$List,
        options?: MethodOptions):
        AxiosPromise<Schema$ListProjectBillingInfoResponse>;
    list(
        params: Params$Resource$Billingaccounts$Projects$List,
        options: MethodOptions|
        BodyResponseCallback<Schema$ListProjectBillingInfoResponse>,
        callback: BodyResponseCallback<Schema$ListProjectBillingInfoResponse>):
        void;
    list(
        params: Params$Resource$Billingaccounts$Projects$List,
        callback: BodyResponseCallback<Schema$ListProjectBillingInfoResponse>):
        void;
    list(callback: BodyResponseCallback<Schema$ListProjectBillingInfoResponse>):
        void;
    list(
        paramsOrCallback?: Params$Resource$Billingaccounts$Projects$List|
        BodyResponseCallback<Schema$ListProjectBillingInfoResponse>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ListProjectBillingInfoResponse>,
        callback?: BodyResponseCallback<Schema$ListProjectBillingInfoResponse>):
        void|AxiosPromise<Schema$ListProjectBillingInfoResponse> {
      let params = (paramsOrCallback || {}) as
          Params$Resource$Billingaccounts$Projects$List;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Billingaccounts$Projects$List;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+name}/projects')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: ['name'],
        pathParams: ['name'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ListProjectBillingInfoResponse>(
            parameters, callback);
      } else {
        return createAPIRequest<Schema$ListProjectBillingInfoResponse>(
            parameters);
      }
    }
  }

  export interface Params$Resource$Billingaccounts$Projects$List {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The resource name of the billing account associated with the projects
     * that you want to list. For example,
     * `billingAccounts/012345-567890-ABCDEF`.
     */
    name?: string;
    /**
     * Requested page size. The maximum page size is 100; this is also the
     * default.
     */
    pageSize?: number;
    /**
     * A token identifying a page of results to be returned. This should be a
     * `next_page_token` value returned from a previous `ListProjectBillingInfo`
     * call. If unspecified, the first page of results is returned.
     */
    pageToken?: string;
  }



  export class Resource$Projects {
    root: Cloudbilling;
    constructor(root: Cloudbilling) {
      this.root = root;
      this.getRoot.bind(this);
    }

    getRoot() {
      return this.root;
    }


    /**
     * cloudbilling.projects.getBillingInfo
     * @desc Gets the billing information for a project. The current
     * authenticated user must have [permission to view the
     * project](https://cloud.google.com/docs/permissions-overview#h.bgs0oxofvnoo
     * ).
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     // The resource name of the project for which billing information is
     *     // retrieved. For example, `projects/tokyo-rain-123`.
     *     name: 'projects/my-project',  // TODO: Update placeholder value.
     *
     *     auth: authClient,
     *   };
     *
     *   cloudbilling.projects.getBillingInfo(request, function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     // TODO: Change code below to process the `response` object:
     *     console.log(JSON.stringify(response, null, 2));
     *   });
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.projects.getBillingInfo
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.name The resource name of the project for which billing information is retrieved. For example, `projects/tokyo-rain-123`.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    getBillingInfo(
        params?: Params$Resource$Projects$Getbillinginfo,
        options?: MethodOptions): AxiosPromise<Schema$ProjectBillingInfo>;
    getBillingInfo(
        params: Params$Resource$Projects$Getbillinginfo,
        options: MethodOptions|BodyResponseCallback<Schema$ProjectBillingInfo>,
        callback: BodyResponseCallback<Schema$ProjectBillingInfo>): void;
    getBillingInfo(
        params: Params$Resource$Projects$Getbillinginfo,
        callback: BodyResponseCallback<Schema$ProjectBillingInfo>): void;
    getBillingInfo(callback: BodyResponseCallback<Schema$ProjectBillingInfo>):
        void;
    getBillingInfo(
        paramsOrCallback?: Params$Resource$Projects$Getbillinginfo|
        BodyResponseCallback<Schema$ProjectBillingInfo>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ProjectBillingInfo>,
        callback?: BodyResponseCallback<Schema$ProjectBillingInfo>):
        void|AxiosPromise<Schema$ProjectBillingInfo> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Projects$Getbillinginfo;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Projects$Getbillinginfo;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+name}/billingInfo')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: ['name'],
        pathParams: ['name'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ProjectBillingInfo>(parameters, callback);
      } else {
        return createAPIRequest<Schema$ProjectBillingInfo>(parameters);
      }
    }


    /**
     * cloudbilling.projects.updateBillingInfo
     * @desc Sets or updates the billing account associated with a project. You
     * specify the new billing account by setting the `billing_account_name` in
     * the `ProjectBillingInfo` resource to the resource name of a billing
     * account. Associating a project with an open billing account enables
     * billing on the project and allows charges for resource usage. If the
     * project already had a billing account, this method changes the billing
     * account used for resource usage charges.  *Note:* Incurred charges that
     * have not yet been reported in the transaction history of the GCP Console
     * might be billed to the new billing account, even if the charge occurred
     * before the new billing account was assigned to the project.  The current
     * authenticated user must have ownership privileges for both the
     * [project](https://cloud.google.com/docs/permissions-overview#h.bgs0oxofvnoo
     * ) and the [billing
     * account](https://cloud.google.com/billing/docs/how-to/billing-access).
     * You can disable billing on the project by setting the
     * `billing_account_name` field to empty. This action disassociates the
     * current billing account from the project. Any billable activity of your
     * in-use services will stop, and your application could stop functioning as
     * expected. Any unbilled charges to date will be billed to the previously
     * associated account. The current authenticated user must be either an
     * owner of the project or an owner of the billing account for the project.
     * Note that associating a project with a *closed* billing account will have
     * much the same effect as disabling billing on the project: any paid
     * resources used by the project will be shut down. Thus, unless you wish to
     * disable billing, you should always call this method with the name of an
     * *open* billing account.
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     // The resource name of the project associated with the billing
     * information
     *     // that you want to update. For example, `projects/tokyo-rain-123`.
     *     name: 'projects/my-project',  // TODO: Update placeholder value.
     *
     *     resource: {
     *       // TODO: Add desired properties to the request body. All existing
     * properties
     *       // will be replaced.
     *     },
     *
     *     auth: authClient,
     *   };
     *
     *   cloudbilling.projects.updateBillingInfo(request, function(err,
     * response) { if (err) { console.error(err); return;
     *     }
     *
     *     // TODO: Change code below to process the `response` object:
     *     console.log(JSON.stringify(response, null, 2));
     *   });
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.projects.updateBillingInfo
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string} params.name The resource name of the project associated with the billing information that you want to update. For example, `projects/tokyo-rain-123`.
     * @param {().ProjectBillingInfo} params.resource Request body data
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    updateBillingInfo(
        params?: Params$Resource$Projects$Updatebillinginfo,
        options?: MethodOptions): AxiosPromise<Schema$ProjectBillingInfo>;
    updateBillingInfo(
        params: Params$Resource$Projects$Updatebillinginfo,
        options: MethodOptions|BodyResponseCallback<Schema$ProjectBillingInfo>,
        callback: BodyResponseCallback<Schema$ProjectBillingInfo>): void;
    updateBillingInfo(
        params: Params$Resource$Projects$Updatebillinginfo,
        callback: BodyResponseCallback<Schema$ProjectBillingInfo>): void;
    updateBillingInfo(
        callback: BodyResponseCallback<Schema$ProjectBillingInfo>): void;
    updateBillingInfo(
        paramsOrCallback?: Params$Resource$Projects$Updatebillinginfo|
        BodyResponseCallback<Schema$ProjectBillingInfo>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ProjectBillingInfo>,
        callback?: BodyResponseCallback<Schema$ProjectBillingInfo>):
        void|AxiosPromise<Schema$ProjectBillingInfo> {
      let params = (paramsOrCallback || {}) as
          Params$Resource$Projects$Updatebillinginfo;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Projects$Updatebillinginfo;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+name}/billingInfo')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'PUT'
            },
            options),
        params,
        requiredParams: ['name'],
        pathParams: ['name'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ProjectBillingInfo>(parameters, callback);
      } else {
        return createAPIRequest<Schema$ProjectBillingInfo>(parameters);
      }
    }
  }

  export interface Params$Resource$Projects$Getbillinginfo {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The resource name of the project for which billing information is
     * retrieved. For example, `projects/tokyo-rain-123`.
     */
    name?: string;
  }
  export interface Params$Resource$Projects$Updatebillinginfo {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The resource name of the project associated with the billing information
     * that you want to update. For example, `projects/tokyo-rain-123`.
     */
    name?: string;

    /**
     * Request body metadata
     */
    requestBody?: Schema$ProjectBillingInfo;
  }


  export class Resource$Services {
    root: Cloudbilling;
    skus: Resource$Services$Skus;
    constructor(root: Cloudbilling) {
      this.root = root;
      this.getRoot.bind(this);
      this.skus = new Resource$Services$Skus(root);
    }

    getRoot() {
      return this.root;
    }


    /**
     * cloudbilling.services.list
     * @desc Lists all public cloud services.
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     auth: authClient,
     *   };
     *
     *   var handlePage = function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     var servicesPage = response['services'];
     *     if (!servicesPage) {
     *       return;
     *     }
     *     for (var i = 0; i < servicesPage.length; i++) {
     *       // TODO: Change code below to process each resource in
     * `servicesPage`: console.log(JSON.stringify(servicesPage[i], null, 2));
     *     }
     *
     *     if (response.nextPageToken) {
     *       request.pageToken = response.nextPageToken;
     *       cloudbilling.services.list(request, handlePage);
     *     }
     *   };
     *
     *   cloudbilling.services.list(request, handlePage);
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.services.list
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {integer=} params.pageSize Requested page size. Defaults to 5000.
     * @param {string=} params.pageToken A token identifying a page of results to return. This should be a `next_page_token` value returned from a previous `ListServices` call. If unspecified, the first page of results is returned.
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    list(params?: Params$Resource$Services$List, options?: MethodOptions):
        AxiosPromise<Schema$ListServicesResponse>;
    list(
        params: Params$Resource$Services$List,
        options: MethodOptions|
        BodyResponseCallback<Schema$ListServicesResponse>,
        callback: BodyResponseCallback<Schema$ListServicesResponse>): void;
    list(
        params: Params$Resource$Services$List,
        callback: BodyResponseCallback<Schema$ListServicesResponse>): void;
    list(callback: BodyResponseCallback<Schema$ListServicesResponse>): void;
    list(
        paramsOrCallback?: Params$Resource$Services$List|
        BodyResponseCallback<Schema$ListServicesResponse>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ListServicesResponse>,
        callback?: BodyResponseCallback<Schema$ListServicesResponse>):
        void|AxiosPromise<Schema$ListServicesResponse> {
      let params = (paramsOrCallback || {}) as Params$Resource$Services$List;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Services$List;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/services').replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: [],
        pathParams: [],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ListServicesResponse>(parameters, callback);
      } else {
        return createAPIRequest<Schema$ListServicesResponse>(parameters);
      }
    }
  }

  export interface Params$Resource$Services$List {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * Requested page size. Defaults to 5000.
     */
    pageSize?: number;
    /**
     * A token identifying a page of results to return. This should be a
     * `next_page_token` value returned from a previous `ListServices` call. If
     * unspecified, the first page of results is returned.
     */
    pageToken?: string;
  }

  export class Resource$Services$Skus {
    root: Cloudbilling;
    constructor(root: Cloudbilling) {
      this.root = root;
      this.getRoot.bind(this);
    }

    getRoot() {
      return this.root;
    }


    /**
     * cloudbilling.services.skus.list
     * @desc Lists all publicly available SKUs for a given cloud service.
     * @example
     * * // BEFORE RUNNING:
     * // ---------------
     * // 1. If not already done, enable the Google Cloud Billing API
     * //    and check the quota for your project at
     * //    https://console.developers.google.com/apis/api/cloudbilling
     * // 2. This sample uses Application Default Credentials for
     * authentication.
     * //    If not already done, install the gcloud CLI from
     * //    https://cloud.google.com/sdk and run
     * //    `gcloud beta auth application-default login`.
     * //    For more information, see
     * //
     * https://developers.google.com/identity/protocols/application-default-credentials
     * // 3. Install the Node.js client library by running
     * //    `npm install googleapis --save`
     *
     * var google = require('googleapis');
     * var cloudbilling = google.cloudbilling('v1');
     *
     * authorize(function(authClient) {
     *   var request = {
     *     // The name of the service.
     *     // Example: "services/DA34-426B-A397"
     *     parent: 'services/my-service',  // TODO: Update placeholder value.
     *
     *     auth: authClient,
     *   };
     *
     *   var handlePage = function(err, response) {
     *     if (err) {
     *       console.error(err);
     *       return;
     *     }
     *
     *     var skusPage = response['skus'];
     *     if (!skusPage) {
     *       return;
     *     }
     *     for (var i = 0; i < skusPage.length; i++) {
     *       // TODO: Change code below to process each resource in `skusPage`:
     *       console.log(JSON.stringify(skusPage[i], null, 2));
     *     }
     *
     *     if (response.nextPageToken) {
     *       request.pageToken = response.nextPageToken;
     *       cloudbilling.services.skus.list(request, handlePage);
     *     }
     *   };
     *
     *   cloudbilling.services.skus.list(request, handlePage);
     * });
     *
     * function authorize(callback) {
     *   google.auth.getApplicationDefault(function(err, authClient) {
     *     if (err) {
     *       console.error('authentication failed: ', err);
     *       return;
     *     }
     *     if (authClient.createScopedRequired &&
     * authClient.createScopedRequired()) { var scopes =
     * ['https://www.googleapis.com/auth/cloud-platform']; authClient =
     * authClient.createScoped(scopes);
     *     }
     *     callback(authClient);
     *   });
     * }
     * @alias cloudbilling.services.skus.list
     * @memberOf! ()
     *
     * @param {object} params Parameters for request
     * @param {string=} params.currencyCode The ISO 4217 currency code for the pricing info in the response proto. Will use the conversion rate as of start_time. Optional. If not specified USD will be used.
     * @param {string=} params.endTime Optional exclusive end time of the time range for which the pricing versions will be returned. Timestamps in the future are not allowed. The time range has to be within a single calendar month in America/Los_Angeles timezone. Time range as a whole is optional. If not specified, the latest pricing will be returned (up to 12 hours old at most).
     * @param {integer=} params.pageSize Requested page size. Defaults to 5000.
     * @param {string=} params.pageToken A token identifying a page of results to return. This should be a `next_page_token` value returned from a previous `ListSkus` call. If unspecified, the first page of results is returned.
     * @param {string} params.parent The name of the service. Example: "services/DA34-426B-A397"
     * @param {string=} params.startTime Optional inclusive start time of the time range for which the pricing versions will be returned. Timestamps in the future are not allowed. The time range has to be within a single calendar month in America/Los_Angeles timezone. Time range as a whole is optional. If not specified, the latest pricing will be returned (up to 12 hours old at most).
     * @param {object} [options] Optionally override request options, such as `url`, `method`, and `encoding`.
     * @param {callback} callback The callback that handles the response.
     * @return {object} Request object
     */
    list(params?: Params$Resource$Services$Skus$List, options?: MethodOptions):
        AxiosPromise<Schema$ListSkusResponse>;
    list(
        params: Params$Resource$Services$Skus$List,
        options: MethodOptions|BodyResponseCallback<Schema$ListSkusResponse>,
        callback: BodyResponseCallback<Schema$ListSkusResponse>): void;
    list(
        params: Params$Resource$Services$Skus$List,
        callback: BodyResponseCallback<Schema$ListSkusResponse>): void;
    list(callback: BodyResponseCallback<Schema$ListSkusResponse>): void;
    list(
        paramsOrCallback?: Params$Resource$Services$Skus$List|
        BodyResponseCallback<Schema$ListSkusResponse>,
        optionsOrCallback?: MethodOptions|
        BodyResponseCallback<Schema$ListSkusResponse>,
        callback?: BodyResponseCallback<Schema$ListSkusResponse>):
        void|AxiosPromise<Schema$ListSkusResponse> {
      let params =
          (paramsOrCallback || {}) as Params$Resource$Services$Skus$List;
      let options = (optionsOrCallback || {}) as MethodOptions;

      if (typeof paramsOrCallback === 'function') {
        callback = paramsOrCallback;
        params = {} as Params$Resource$Services$Skus$List;
        options = {};
      }

      if (typeof optionsOrCallback === 'function') {
        callback = optionsOrCallback;
        options = {};
      }

      const rootUrl = options.rootUrl || 'https://cloudbilling.googleapis.com/';
      const parameters = {
        options: Object.assign(
            {
              url: (rootUrl + '/v1/{+parent}/skus')
                       .replace(/([^:]\/)\/+/g, '$1'),
              method: 'GET'
            },
            options),
        params,
        requiredParams: ['parent'],
        pathParams: ['parent'],
        context: this.getRoot()
      };
      if (callback) {
        createAPIRequest<Schema$ListSkusResponse>(parameters, callback);
      } else {
        return createAPIRequest<Schema$ListSkusResponse>(parameters);
      }
    }
  }

  export interface Params$Resource$Services$Skus$List {
    /**
     * Auth client or API Key for the request
     */
    auth?: string|OAuth2Client|JWT|Compute|UserRefreshClient;

    /**
     * The ISO 4217 currency code for the pricing info in the response proto.
     * Will use the conversion rate as of start_time. Optional. If not specified
     * USD will be used.
     */
    currencyCode?: string;
    /**
     * Optional exclusive end time of the time range for which the pricing
     * versions will be returned. Timestamps in the future are not allowed. The
     * time range has to be within a single calendar month in
     * America/Los_Angeles timezone. Time range as a whole is optional. If not
     * specified, the latest pricing will be returned (up to 12 hours old at
     * most).
     */
    endTime?: string;
    /**
     * Requested page size. Defaults to 5000.
     */
    pageSize?: number;
    /**
     * A token identifying a page of results to return. This should be a
     * `next_page_token` value returned from a previous `ListSkus` call. If
     * unspecified, the first page of results is returned.
     */
    pageToken?: string;
    /**
     * The name of the service. Example: "services/DA34-426B-A397"
     */
    parent?: string;
    /**
     * Optional inclusive start time of the time range for which the pricing
     * versions will be returned. Timestamps in the future are not allowed. The
     * time range has to be within a single calendar month in
     * America/Los_Angeles timezone. Time range as a whole is optional. If not
     * specified, the latest pricing will be returned (up to 12 hours old at
     * most).
     */
    startTime?: string;
  }
}
